SONAR-8183 fix quality flaws on BackendCleanup

diff --git a/server/sonar-server/src/main/java/org/sonar/server/platform/BackendCleanup.java b/server/sonar-server/src/main/java/org/sonar/server/platform/BackendCleanup.java
index 3d7dc3ca34ac0830e24d4a7419924fd456305cc1..2fc63bbb302b28d99615c870b4e8f4eead4459a2 100644 (file)
--- a/server/sonar-server/src/main/java/org/sonar/server/platform/BackendCleanup.java
+++ b/server/sonar-server/src/main/java/org/sonar/server/platform/BackendCleanup.java
@@ -170,6 +170,7 @@ public class BackendCleanup {
     BulkIndexer.delete(esClient, indexName, esClient.prepareSearch(indexName).setQuery(matchAllQuery()));
   }
 
+  @FunctionalInterface
   private interface TableCleaner {
     void clean(String tableName, Statement ddlStatement, Connection connection) throws SQLException;
   }